CVE-2023-6040

An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family)

HIGH
7.8
CVSS Score
Published: January 12, 2024 at 01:37 AM UTC
Updated: June 17, 2026 at 06:49 AM UTC
3 products affected across 3 vendorsLinux KernelDebian LinuxLinux

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family); While creating a new netfilter table, lack of a safeguard against invalid nf_tables family (pf) values within `nf_tables_newtable` function enables an attacker to achieve out-of-bounds access.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.16 ≤ v < 4.19.3054.20 ≤ v < 5.4.2675.11 ≤ v < 5.15.1475.16 ≤ v < 5.185.5 ≤ v < 5.10.208
Affected range stops below 4.19.305, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.208, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.15.147, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.18, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.267, so it looks safe — our inference, not a vendor statement
v < 5.18-rc1
Affected range stops below 5.18-rc1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHcanonical
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125

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